Question

you can _____ adjust to not sleeping at night. use medicine to easily use meditation to never fully

Explanation:

The human body has an innate circadian rhythm that regulates sleep - wake cycles. While some adaptations can be made, it is not possible to fully adjust to not sleeping at night as sleep is essential for physical and mental health. Medicine and meditation can help with sleep - related issues but not enable complete non - sleep adaptation. And it is not easy to fully adjust to not sleeping at night.

Answer:

D. never fully